Spring-seat construction.



F. B. KING.

SPRING SEAT CONSTRUCTION.

APPLICATION FILED NOV. 14, 1910. 6,723. Patented Mm. 14, 1911.

2 BHEETSSHEB'I' 1.

F. B. KING.

SPRING SEAT CONSTRUCTION.

APPLIUATION FILED Nov.14, 1910.

Patented Mar. 14E, 191]..

2 SHEETS-SHEET 2.

UNITED sfrafrns PATENT OFFICE.

FRED B. KING, 0F ALBION. MICHIGAN. ASSIGNOR T0 NATIONAL SPRING .AND WIRECOMPANY, OF ALBION, MICHIGAN. A CORPORATION OF MICHIGAN.

SPRING-SEAT CONSTRUCTION.

Specification of Letters Patent.

Patented Mar. 14, 1911.

Application filed November 14, 1910. Serial No. 592,194.

To all whom it may concern:

Be it known that l, liann B. Kino, a citizen of the United States ofAmerica, residing aty Albion, in the county ol Calhoun and State ot'Michigan, have invented certain new and useful .Improvements in Spring-Seat Construction, of which the following is a specification, referencebeing had therein to the accompanying drawings.

In spring construction of seats adapted for Vehicles, `it is desirablethat the parts be. so disposed as to be quickly assembled and that theseat structure when completed be adapted to use :for either light orheavy loads.

This invention relates to seat construction provided with means wherebythe main springs may be reinforced it desired by auxiliary springs whichaid in taking up the load after the. main springs have been partiallydepressed, the auxiliary springs being so arranged as to constitute abodily removable unit which may be easily placed in position in the mainseat when desired.

The invention consists in the matters hereinafter set forth, and moreparticularly pointed out in the appended claims.

In the drawings, Figure 1 is a plan view, in section, of an assembledseat that embodies features of the invention; Fig. 2 is a View in endelevation thereof; F 2l is a view in section on or about line :1f-.11 ofFig. 1, and Fig. 4 is a View in perspective of a portion of the seat.

As herein indicated as a preferred form of-construction a marginal baseframe is made of a wire 1 of proper proportions along the sides and endsof which a series of regularly disposed spiral coil marginal mainsprings 2 of the usual furniture type or hour glass pattern are securedat intervals as by clips 3 or like suitable means. Thev lowerconvolutions of inner main springs 4 of like pattern are mounted onspacing rods 5 secured near their ends iii pairs in parallel relation tothe lower con- Volutioiis of the marginal springs 2 which are secured tothe ends of the base frame, the ends of the rods being unattached to andclear of the base frame. The inner portions of the lower convolutions ofthe main springs on the sides of the main frame are likewise connectedby suitable clips 6 to side bars 7 similar in all respects to thespacing rods 5. The upper convolutions of the inargina] springs 2 aresecured together by an upper rim frame S which is fastened in positionby clips i) preferably of the same type as those used in the base trame.The upper convolutions of the interior springs 4 are not stayed.

An auxiliary base frame is formed of intersecting st rips lt),preferably of flat spring sheet material which are spaced to lie betweenthe main frames, are riveted or otherwise secured together at theirintersections and are detachably secured to the lower rim :trame S as byfolding the ends around the wire forming the latter. At eachintersection an auxiliary spring is mounted on the strips. llie latterwhich are preferably conoidalasindicated at ]1,areeach secured to thestrips by insertion through tongues or loops .l2 struck out from thebodies ol the strips or may be otherwise` made fast in any suitablemanner. Their upper extremities are interconnected by resilient andflexible bars 123 which are free from connection with either the mainbase trame or the upper rim frame or ilroni the main springs. Furthermore, the auxiliary frame strips 1() when placed on the main frame, lieabove the rods 5 and side members T.

As a result of this (amstruction a spring seat is obtained which, whileit is available lor use in supportingr heavy loads, may also be arrangedto carry lighter burdens by removing the auxiliary springs, which isreadily donc by disconnecting the auxiliary Yl'rame strip ends from thelower rim frame.

ln the use of the complete assembled structure a load on the centralportion ot' the main slfn'ings, as it partially depresses the latter,forces the spacing rods down into approximately the positions indicatedin Fig. El, clear ot the auxiliary base f ame which is not etl'ecteduntil further depression of the main springs brings the load to act onthe shorter auxiliary springs. The auxiliary 'frame then takes up itsshare ot weight and transmits it to the lower rini frame which is ofcourse usually rigidly supported. This produces a cheap and ellicientseat which is iioiseless in its action and which may be adj listed foreither light or heavy service without difficulty as the auxiliarymembers may be removed if desired, Without disintegrating the mainstructure.

Obviously, changes in the details of conlstruction may be made withoutdeparting solelyby the end marginal springs, spiral inner main springseach independently supported by the Spacing rods and an upper ase "ramespiral marginal main sprin rim frame connecting the side and endmarginal main springs. Y

2. In spring constructions, a marginal base frame, spiral marginal mainsprlngs secured at intervals on the sides and ends of the base frame,said bars connecting the lower portions of the side marginal sprmgsindependently of the base frame, spacing rods supported by the lowerportions of the end marginal main springs independently of the baseframe, spiral inner main springs each independently supported on thespacing rods and an upper rim frame to which the upper portion of theside and end marginal main frames are connected.

3. In spring constructions, a marginal base frame, spiral marginal mainsprings secured at regular intervals by their base convolutions to thesides and ends of the base frame, Vspacing rods secured to and supportedby the base convolutions of the end marginal main springs independentlyof the base frame, inner spiral main springs whose lower convolutionsare secured to and supported by the acing rods independently of eachother and of the base frame and an upper rim frame secured to andsupported by the upper convolutions of theend and side marginal mainsprings only.

4. In spring constructions, a marginal base frame, spiral marginal mainsprings secured at regular intervals -by their base convolutions to thesides and ends of the base frame, spacing rods secured to and supportedby the base convolutions of the end marginal springs independently ofthe base frame, spacmg bars secured to and supported bythe baseconvolutions of the side marginal main springs independently of the baseframe, spacing rods, spiral inner main A.springs secured at regularintervals by their base convolutions to the spacing rods independentlyof the marginal base frame, and an upper rim frame connected to andsupported solely by the upper convolutions of the marginal end and sidemain springs.

5. In spring constructions, a marginal base frame, spiral marginal mainsprings secured at regular intervals on the sides and Vends of the baseframe, spacing rods secured to and supported by the marginal end mainsprings independently of the marginal base frame, spiral inner mainspringsfsecured at regular intervals on the spacmg rods, an

upper rim frame secured on the upper portions of the side and cud mainsprings, an auxiliary base frame secured to the marginal base frame overthe spacing rods, auX- iliary springs mounted on the auxiliary framebetween the main springs, and resilient connections between the upperends of the auxiliary springs independent of the main baseand upper rimframes and of the main springs.

6. ln sprlng constructions, Va margmal upper rim frame secured on theupper per-'- tions of the side and end main springs, 1ntersecting stripsinterposed Abetween the vmain springs over the spacing bars and securedat their ends to the base frame, andv auxiliary springs each secured onthe strips at their intersection with their upper ends independent ofthe main springs and the base and rim frames.

7 In spring constructions, a marginal base. frame, spiral marginal mainsecured at intervals to the sides and ends of the base frame by theirbase convolutions, spacing rods secured to and supported by the basekconvolutions of the main springs independently of the base frame, anupper rim frame connecting the upper convolutions of the marginal mainframes, spiral inner main springs each connected to and supported on thespacing rods by its lower convolution independently 'of the adjacentsprings, the upper portion of said spring being disconnected from theother springs and said frames, an auxiliary base frame consisting ofcrossed strips secured to ether at their intersections in spacedrelatlon to clear the main springs and attached at their ends to themarginal base frame, auxiliary springs of less height thanfthe mainsprings each secured by its base convolution to a pair of auxiliarystrips at the intersection thereof, andresilient bars connecting theupper convolutions of the auxiliary springs, the spacing rods beingadapted'to-bend under load on the main springs independently of theauxiliary strips, and the latter bei adapted to dex only under load tr'tte bythe auxiliary springs.

8. In spring constructions, a marginal base frame, spiral marginal mainsprings secured at intervals to the sides and ends of the base frameby-their base convolutions,

spacing rods secured to and supported by the base convolutions of themam springs independently of the base frame, an upper rim frameconnecting the upper convolutions of the marginal main frames, spiralinner main springs each connected lo and supported on the spacin rods byits lower convolution independent y of the adjacent springs, the upperportion of said spring being disconnected from the other springs andsaid frames, an auxiliary base frame consisting of crossed stripssecured torrether at their intersections in spaced relation to clear themain sprin s and attached at their ends to the margina base frame,auxiliary springs of less height than the main springs each secured byits base convolution to a pair of auxiliary strips at the intersectionthereof, and resilient bars connecting the upper convolutions of theauxiliary springs,

the spring rods being adapted to bend under load on the main springsindependently of the auxiliar' stri )5, and the latter being adapted toex oniy under load transmitted by the auxiliary springs, and theauxiliary springs and supgorting strips being removable withoutisturbance of the main springs and frames.

In testimony whereof I affix my signature 1n presence of two witnesses.

FRED B. KING.

Witnesses Roar. T. STEVENS, BLANCHE H. HoY'r.

